Upload JSON Request as a background task in Flutter - flutter

Question

I have a requirement where I want to upload JSON request data(fetch from database tables) to server and get the response, based on response I have to update local database(sqflite: ^1.2.1).
I have multiple screens and I need to create different JSON request data on every screen based on user action. Currently for same scenario I am using Intent Service in my another native android application.
What is the based way to handle such type of scenario in flutter Android application. If I use channel and implement Intent Service then I can't access sqflite database in Android specific region. If internet is not available then I have to keep waiting for connectivity, when device get connectivity then I need to upload all the created events to server one by one.
Please someone advise me the based possible way to handle this specific scenario in Flutter.
Thanks in advance

Answer 1

Save your JSON requests locally first using sqflite or sharedPreferences for instance. Once they are synced to your served, remove them from sync queue

Answer 2

I got the solution: I am able to access SQFlite database in native through channel.
This is the path of the database created in flutter
"/data/data/{package name}/app_flutter/{database file name}"
So we can access like in native using channel
SQLiteDatabase mDatabase= SQLiteDatabase.openDatabase("/data/data/{package name}/app_flutter/{database file name}", null, 0);
Log.i("MainActivity", "mDatabase.isOpen():"+mDatabase.isOpen());//check DB is open or not
String query = "SELECT * FROM {Table Name}";
Cursor cursor=mDatabase.rawQuery(query,null);
if (cursor.moveToFirst()){
do{
String data= cursor.getString(cursor.getColumnIndex({Table Column Name}));
Log.i("MainActivity", "Column Data Value:"+data);
}while(cursor.moveToNext());
}
cursor.close();
So I will implement Service in native to achieve this scenario.
Thank You